RU2721643C2 - Carcass for upholstered furniture for sitting - Google Patents

Abstract

FIELD: furniture production.SUBSTANCE: invention relates to frame for upholstered furniture for sitting. Frame for upholstered furniture comprises seat frame part and foot part attached to car seat part. Seat frame part comprises frame seat structure, which is partially made of hollow tubes, wherein one of the seat frame part and the first leg part comprises a support device, configured to align and temporarily attach at least one of the seat frame portion and the first leg portion to the other of the seat frame portion and the first leg portion. Support device comprises an insertion section located on one of the seat frame part and the first leg part and configured to be inserted into another of the seat frame portion and the first leg part to align and hold the first leg portion, attached to seat frame part in independent intermediate state of assembly, wherein at least one of the seat frame part and the first leg part comprises at least sections of the final connecting device, comprising a fastening plate, a hole located in the other of the frame portion of the seat and the first leg portion, and a final connecting fastening rod. Fastening plate has a channel which is parallel to seat frame seat plane. Final connecting fixing rod is made with possibility of interaction with the hole and with the channel located in the fastening plate. Said rod can be tightened.EFFECT: invention is aimed at reduction of its overall dimensions, simplification of its assembly, as well as reduction of frame weight.20 cl, 24 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a frame for upholstered furniture for seating, comprising a frame part of the seat and at least a first foot portion to be attached to the frame part of the seat. The present invention further relates to an upholstered element of furniture for seating, and a method for mounting a frame for upholstered furniture for seating.

State of the art

Upholstered furniture for seating, such as upholstered sofas and armchairs, is a type of furniture that is often very heavy and takes up a lot of space, also when storing a soft sofa in a store in a warehouse, and when transporting a soft sofa from a warehouse to someone’s house .

EP 2374374 discloses a modular soft sofa in which the back modules and side panels are each provided with a fixing plate having a special fixing insert that is adapted to be attached to a special fixing part forming a profile of the central frame. However, this sofa design is also space-consuming and heavy.

DE 2 156 497 discloses a sofa in which, in a first step, a cylinder of solid material is bolted to a leg. Then the frame part is moved into a cylinder of solid material. After that, the installation bolt is screwed up into the wall of the solid cylinder to attach the frame to the leg.

Disclosure of invention

The aim of the present invention is to provide a frame for upholstered furniture for seating, which is easy to assemble, takes up little space and is light in weight.

This goal is achieved by means of a frame for upholstered furniture for seats, comprising a frame part of the seat and at least a first foot portion attached to the frame part of the seat, in which the frame part of the seat contains the frame structure of the seat, which is at least partially made of hollow tubes, which at least one of: the frame part of the seat and the first foot part, contains a support device configured to align and temporarily attach at least one of: the frame part of the seat and the first foot part to another of: the frame part of the seat and the first foot a part, the supporting device comprising an input section located on one of: the frame part of the seat and the first foot part, and adapted to be inserted into another of: the frame part of the seat and the first foot part, with the possibility of aligning and holding the first foot part attached to frame part of the seat in a self-contained intermediate state assembly, and in which at least one of: the frame part of the seat and the first foot part, contains at least sections of the final connecting device, comprising: i) a mounting plate having a channel that is parallel to the plane for sitting the frame part of the seat, and mounting the plate is located in one of: the frame part of the seat and the first foot part, ii) the hole located in the other of: the frame part of the seat and the first foot part, and iii) the final connecting mounting rod made with the possibility of interaction with the hole and with the channel located in the mounting plate, wherein the rod is tightened to create a pulling force with respect to the frame part of the seat and the first foot part, acting along the longitudinal direction of the rod for the final connection of the first foot part to the frame part of the seat and transforming the self-contained intermediate state of the assembly into a self-ready using state of mind.

An advantage of this invention is that one person can easily assemble the frame for upholstered furniture for sitting, because it is light in weight, and since the design of the frame of the seat and the first foot part makes it easy to assemble the parts. In addition, a strong connection between the frame part of the seat and the first foot part is achieved, with a limited, if provided, clearance between the frame part of the seat and the first foot part.

By a “self-contained intermediate assembly state” is meant a state in which the connection between the seat frame and the first foot portion is strong enough for the assembled structure to support its own weight in a free-standing position, but the assembled structure cannot withstand the load that the furniture is subjected to for seating with its intended use, for example, as a sofa.

According to one embodiment, the support device is at least partially separated from the final connecting device. An advantage of this embodiment is that it becomes easy to assemble the furniture frame.

According to one embodiment, the support device and the final connecting device cooperate in the final connection of the first foot portion and the seat frame. An advantage of this embodiment is that the connection between the foot portion and the frame portion of the seat becomes even stronger.

According to one embodiment, the support device comprises an insertion portion located on one of the frame portion of the seat and the first foot portion, and configured to insert into the other of the frame portion of the seat and the first foot portion. An advantage of this embodiment is that it provides a simple, even more stable connection between the frame portion of the seat and the first foot portion.

According to one embodiment, the insertion portion is permanently fixed to one of: the frame portion of the seat and the first foot portion on which the input portion is located. An advantage of this embodiment is that the installation becomes easier since the insertion portion is already fixed in the correct position.

According to one embodiment, the mounting plate is located in the hollow interior of the hollow tube of the frame portion of the seat, and in which the hole is located on the first leg portion. This provides a strong connection between the frame part of the seat and the first foot part, with a small gap, and also facilitates the possibility of tightening the connection to the desired degree.

According to one embodiment, the channel of the mounting plate is a threaded hole configured to interact with a threaded rod stem. This provides a simple and effective tightening of the connection between the frame part of the seat and the first foot part.

According to one embodiment, the final connecting rod is a bolt, wherein the hole located in the other of: the frame part of the seat and the first foot part is smaller than the head of the bolt, and is configured to interact with the head when tightening the bolt. The advantage of this embodiment is that it includes a machined element, a head bolt, which is cost-effective, has high strength and is easy to use for a person mounting a furniture frame.

According to one embodiment, the longitudinal direction of the final connecting fixing rod coincides, in a standalone, ready-to-use state, with the longitudinal direction of the hollow tube of the frame portion of the seat, the rod being connected to the hollow tube by means of a mounting plate or hole located therein. The advantage of this embodiment is that it is very strong when connecting the frame part of the seat to the first foot part, since the forces acting on the rod will be transmitted along the longitudinal direction of the hollow tube, which is the direction of high strength. Even more preferably, the longitudinal direction of the final connecting fixing rod coincides, in a stand-alone condition, ready for use, with the longitudinal direction of the hollow tube, which is the front plate of the seat frame of the seat frame, and the rod is connected to the front plate of the seat frame by means of the mounting plate or hole located in her. An advantage of this embodiment is that the front plate of the seat frame, which usually receives the greatest tension when using upholstered furniture, is rigidly attached to the first leg portion.

According to one embodiment, the frame comprises a second foot portion configured to attach to the frame of the seat at its opposite end, compared with the first foot portion in which at least one of: the frame portion of the seat and the second foot portion comprises a support device made with the possibility of alignment and temporary attachment of at least one of: the frame part of the seat and the second foot part to another of: the frame part of the seat and the second foot part, and the supporting device comprises an input section located on one of: the frame part of the seat and the second foot part, and made with the possibility of introducing into another of: the frame part of the seat and the second foot part, with the possibility of aligning and holding the second foot part attached to the frame part of the seat in a self-contained intermediate state of the assembly, and in which at least one of: the frame part of the seat and the second foot part, contains the final a single device comprising: i) a mounting plate having a channel parallel to the plane for sitting the frame part of the seat, the mounting plate located in one of: the frame part of the seat and the second foot part, ii) an opening located in the other of: frame part the seat and the second leg portion, and iii) a final connecting fixing rod configured to interact with the hole and the channel located in the mounting plate, the rod being tightened to create a pulling force with respect to the frame portion of the seat and the second leg portion, acting along the longitudinal direction of the rod for the final connection of the second leg part to the frame part of the seat and transforming the self-contained intermediate state of the assembly into a self-contained ready-to-use state. This provides a stable frame that is easy to install and lightweight. According to one embodiment, the mounting plate is located inside the hollow tube of the frame portion of the seat, and the hole is located on the second foot portion. This provides a strong connection, which is also easy to tighten.

According to one embodiment, the frame structure of the seat is at least partially made of hollow tubes made of a material selected from: metal such as steel and aluminum, plastic and composites. The composites can be fiber reinforced polymers, for example, plastics reinforced with carbon and / or fiberglass, plastics reinforced with wood particles. These materials provide high strength and light weight for the frame structure of the seat. Preferably, the hollow tubes are made of steel or aluminum. This provides high strength and low cost.

According to one embodiment, the carcass portion of the seat comprises a front bar of the seat frame, a rear bar of the seat frame, a first side bar of the seat frame and a second side bar of the seat frame, which are all made of hollow tubes. An advantage of this embodiment is that it provides a very compact and lightweight frame for upholstered seating furniture. According to one embodiment, the front seat frame stem, the rear seat frame stem, the first side frame of the seat frame and the second side frame of the seat frame are all made of metal tubes, more preferably steel tubes. This provides a very robust construction with little space requirement.

According to one embodiment, the front frame of the seat frame, the rear frame of the seat frame, the first side frame of the seat frame and the second side frame of the seat frame are all made of hollow tubes having a rectangular cross-section. This provides an efficient way of attaching, for example, legs, upholstery parts, cover elements, and the like. to the seat frame. According to one embodiment, the rectangular section has its largest width in the vertical direction. This provides an effective way to achieve strength to withstand heavy loads from people sitting on a soft element of furniture for seating.

According to one embodiment, the first and second sections of the side panels are configured to connect at opposite ends of the frame of the seat, in which the back of the frame for upholstered furniture for seating is configured to attach to the first and second sections of the side. An advantage of this embodiment is that it provides a sturdy frame for seating furniture that is lightweight.

According to one embodiment, at least one, preferably both of: the first and second portions of the sidewalls is provided with (s) a corresponding backrest connecting device, and in which the corresponding end (s) of the backrest is provided with a connecting device (s) ) sidewalls, each of which connecting device (c) of the sidewalls is configured to wedgely attach to the corresponding connecting device of the back of the sidewall portion. An advantage of this embodiment is that it provides easy fastening of the backrest. According to one embodiment, the sidewall connecting device (s) has a common wedge shape. Thus, an effective and stable wedge connection can be achieved.

According to one embodiment, the frame portion of the seat, the first and second foot portions and the back of the frame for upholstered furniture for seating are packaged in a parallelepiped-like flat package. An advantage of this embodiment is that the furniture element is easy to store and transport from a warehouse to a person’s house. Preferably, the parallelepiped-shaped flat package has a height that is less than 30% of the height of the parallelepiped-shaped flat package. An advantage of this embodiment is that it facilitates the possibility of stacking several flat packages on top of each other.

According to one embodiment, the support device comprises a support hook configured to cooperate with a mating portion located on another of: a frame portion of the seat and a first foot portion. An advantage of this embodiment is that the connection in a self-contained intermediate state of the assembly will be more stable.

According to one embodiment, the first foot portion comprises a front and rear strut made of metal tubes. This provides a sturdy foot construction. Preferably, the metal is steel, as this provides high strength with low weight.

According to one embodiment, the first foot portion forms part of the first sidewall. An advantage of this embodiment is that it provides a reduction in the number of parts required to assemble the frame for upholstered furniture for seating.

Another objective of the present invention is to provide an upholstered furniture element that is easy to assemble and light in weight. This goal is achieved by an upholstered furniture element that comprises a frame for upholstered furniture for seating according to any of the embodiments described hereinabove.

The advantage of this soft seat furniture element is that it can be easily mounted with one person and is light in weight.

According to one embodiment, the upholstered furniture element further comprises at least one upholstered backrest supported by the backrest of the upholstered furniture frame for seating, wherein at least one upholstered seat element at least partially covers the frame portion of the seat and the coating covers soft backrest element, and supported by the frame for upholstered furniture for seating. The advantage of this embodiment is that it provides low weight, ease of assembly and, in addition, a comfortable soft element of furniture for the seat.

Another objective of the present invention is to provide an efficient and easy method of mounting a frame for upholstered furniture for seating.

This goal is achieved by providing a frame part of the seat, which contains the frame structure of the seat, which is at least partially made of hollow tubes, providing at least the first foot part, the insertion of the input portion of the supporting device located on one of: the frame part of the seat and the first foot parts, into another of: the frame part of the seat and the first foot part with the possibility of aligning and holding the first foot part attached to the frame part of the seat in an independent intermediate state of the assembly, and install the final connecting device by tightening the final connecting rod interacting with the channel located in a mounting plate located on one of: the frame part of the seat and the first foot part, the channel being parallel to the plane of the seat of the frame part of the seat, and with a hole located in the other of: the frame part of the seat and the first foot part, for transforming itself a standing intermediate state of the assembly into a self-contained ready-to-use state.

The advantage of this method is that it provides an efficient and easy installation of the frame for upholstered furniture for seating, a method that can be carried out by one person.

According to one embodiment, the second foot portion is mounted on the opposite end of the seat frame in accordance with principles similar to the mounting principles of the first foot portion.

According to one embodiment, the method further comprises attaching the first and second portions of the sidewalls to the frame portion of the seat, wherein each section of the sidewall is provided with a backrest connecting device, providing a backrest having sidewall connecting devices located at opposite ends of the backrest, each sidewall connecting device being made with the possibility of wedge attachment to the back connection devices, and the movement of the back in a direction substantially perpendicular to the plane of the carcass portion of the seat to allow the connection of the back side connection devices to the back connection devices of the respective side wall sections. The advantage of this method is that it provides efficient and easy attachment of the backrest by one person.

Other objects and features of the present invention will be apparent from the description and claims.

Brief Description of the Drawings

Further, the present invention is described in more detail with reference to the attached drawings, in which:

Figure 1 is a three-dimensional view depicting a flat package containing a frame for upholstered furniture for sitting.

Figure 2 is a three-dimensional view illustrating the components of the frame for upholstered furniture for seating, which is contained in a flat package according to figure 1.

Figure 3 is a three-dimensional view of the frame of the seat frame for upholstered furniture for sitting.

Fig. 4a is a three-dimensional view showing the angle of the seat frame according to Fig. 3.

Fig. 4b is a cross-sectional view showing the angle connecting device shown in Fig. 4a.

5 is a three-dimensional view illustrating a first sidewall of a frame for upholstered furniture for seating.

6a is a three-dimensional view depicting a seat back connecting device of a first sidewall.

Fig.6b is a three-dimensional view depicting the connecting device of the backrest in more detail.

Fig. 7a is a three-dimensional view showing the first connecting device of the seat frame of the first sidewall.

Fig. 7b is a three-dimensional view showing the first connecting device of the seat frame in more detail and in section.

Fig is a three-dimensional view depicting the back of the frame for upholstered furniture for seating.

Fig. 9a is a three-dimensional view depicting a first backrest side connecting device.

Fig. 9b is a three-dimensional view showing a pin of a first backrest seat frame connecting device.

Figure 10 depicts the first stage of installation of the frame for upholstered furniture for seating.

11 a depicts how a seat frame is temporarily attached to a first sidewall.

11b shows how the seat frame is firmly attached to the first sidewall.

11c illustrates an alternative embodiment of temporarily attaching a seat frame to a first sidewall.

12 depicts a second stage of mounting a frame for upholstered furniture for seating.

Fig depicts the third stage of installation of the frame for upholstered furniture for seating.

Fig.14 depicts how the back was attached to the first sidewall.

Fig depicts another stage of mounting the frame for upholstered furniture for seating.

Fig.16 depicts the final stage of installation of the frame for upholstered furniture for seating.

Fig. 17a is a sectional view and shows an alternative connection between the seat frame and the first sidewall.

Fig.17b is a three-dimensional view, further depicting an alternative connection between the seat frame and the first sidewall.

Description of preferred embodiments of the invention

Figure 1 depicts a flat package 1 having the general shape of a parallelepiped, in this embodiment a rectangular cuboid, and comprising a frame for upholstered furniture for seating, packaged, for example, in a cardboard package 2. In this embodiment, the frame for upholstered furniture for seating soft sofa. For a soft sofa, which, when mounted, is 2 meters long, 1.2 meters high and 0.8 meters deep, flat package 1 can have external dimensions: LT 2.1 meters long, WT 0.9 meters wide and HT 0.2 meters high, providing high efficiency and small size, and when the flat packaging 1 is stored in a warehouse, and when transported from a warehouse to an end-user home. Thus, preferably, the parallelepiped-shaped flat package 1 has a length LT that is 5-20% longer than the length of the frame of the soft sofa. The height HT of the parallelepiped-shaped flat package 1 is preferably less than 30% of the width WT of the parallelepiped-shaped flat package 1.

Figure 2 depicts the components that are contained in the flat package 1 according to figure 1 and are intended to form a frame 4 for upholstered furniture for sitting. The components include a seat frame 6, a first foot portion in the form of a first sidewall 8, a second foot portion in the form of a second sidewall 10, and a backrest 12. As can be seen, these various components can be packaged together with very little space requirement.

Figure 3 depicts the frame 6 of the seat in more detail. The frame 6 of the seat includes a frame structure of the seat, which contains the front plate 14 of the frame of the seat, which is parallel and at a distance from the rear strip 16 of the frame of the seat. The front and rear trims 14, 16 of the seat frame are connected to each other at opposite ends by means of the first side strip 18 of the seat frame and the second side strip 20 of the seat frame. The front and rear trims 14, 16 and the first and second side trims 18, 20 together form a rectangular frame structure 22 of the seat. Preferably, the straps 14, 16 of the seat frame and the first and second side straps 18, 20 are all made of hollow tubes, for example, hollow tubes made of metal such as steel or aluminum, plastic materials, or hollow tubes made of composite material, which means a material made of at least two components. For example, the composite material may be fiber reinforced polymers, for example, plastic reinforced with carbon and / or fiberglass, plastic reinforced with wood particles, etc. Preferably, the strips 14, 16, 18, 20, all are made of hollow tubes having a rectangular cross section, which provides an effective way to install mounting, for example, legs, upholstery parts, covering elements, etc. for frame 6 seats. The rectangular cross-section of the hollow tubes has its largest width in the vertical direction to withstand loads when sitting.

The seat frame 6 comprises a seat support structure 24. In the shown embodiment, the seat support structure 24 comprises a plurality of parallel zigzag springs 26 that are attached and extend between the front and rear planks 14, 16 of the seat frame. Optionally, one or more additional support strips 28 may extend between the front and rear planks 14, 16 of the seat frame to increase the stability of the seat frame structure 22.

Fig. 4a depicts an angle 30 of the seat frame of the seat frame structure 22 of the seat in more detail. It should be understood that other angles 30 of the seat frame of the seat frame structure 22 of the seat can be made in a similar manner. The angle 30 of the seat frame includes a seat structure that fixes the front plate 14 of the seat frame to the second side plate 20. At the junction between the front plate 14 of the seat and the side plate 20 there is a receiving hole 34 of the sidewall, which is configured to receive the first sidewall, as will be shown below in this document.

The front plate 14 of the seat frame has a hollow interior 36 and a side plate mounting plate 38 is placed in this hollow interior, as will be described in more detail later in this document. Such mounting plates 38 are placed in each of the four corners 30 of the frame of the seat frame structure 22.

As also shown in FIG. 4 a, the front bar 14 of the seat frame is provided with a series of spring holders, one of which is shown in FIG. 4 a, for supporting the springs 26.

Fig.4b depicts a section of the front strip 14 of the seat frame in the region of the mounting plate 38 of the sidewall. The sidewall mounting plate 38 is provided with locking flanges 42 for fixing, for example, by welding the plate 38 to the inside 36 of the bar 14. The plate 38 has a central portion 44 that is provided with a threaded hole 46 for attaching the first sidewall 8, as will be described below. The threaded hole 46 is parallel to the seat plane of the seat frame 6, wherein the seat plane is the horizontal plane on which people will sit on the sofa, and in this embodiment, the hole 46 is also parallel to the longitudinal direction of the front plate 14 of the seat frame, i.e. the center line of the hole 46 is parallel to the seat plane of the seat frame 6, and to the longitudinal direction of the front plate 14 of the seat frame.

Figure 5 depicts the first sidewall 8 in more detail. The first sidewall 8 comprises a front pillar 48 and a rear pillar 50, which are parallel to each other and which will be essentially vertical in the final soft sofa. The front and rear racks 48, 50 form the first foot of the frame for upholstered furniture for seating and are attached using the upper arm 52 of the armrest and the central support bar 54 of the side. At the lower ends, opposite the armrest bar 52, the front and rear struts 48, 50 are provided with a corresponding base 56.

6a and 6b depict a backrest connecting device 58 that is mounted on the rear pillar 50 of the first sidewall. The backrest connecting device 58 has an upper end 60, which is adjacent to the upper armrest plate 52, and an opposite lower end 62. The connecting guide 64 extends from the upper end 60 to the lower end 62. The connecting guide 64 is wider at the upper end 60 than the lower end 62 and therefore has the general shape of a wedge-shaped receiving device with its openings 66 located adjacent to the upper arm 52 of the armrest. It should be understood that such a backrest connecting device is mounted on the second sidewall 10. In the mounted state, the back connecting devices of the two sidewalls 8, 10 will be facing each other.

7a and 7b depict a first seat frame connecting device 68 of the first sidewall 8. A first seat frame connecting device 68 is attached to the front strut 48 slightly below the center side support strip 54. The connecting device 68 includes a connecting part 70 that is attached to the front plate 48, for example, by welding or riveting, and which is parallel to the front plate 48, and a supporting device having an inserted portion in the form of a support pin 72, which is fixed in this embodiment to the connecting device 68 and thereby is permanently fixed to the first sidewall 8, and which extends perpendicularly outward from the part 70 and from the front strut 48. Typically, the part 70 is welded, riveted and / or, in alternative embodiments, bolted to the front plate 48.

The front pillar channel 74 extends through the front pillar 48. The channel 74 has a wide diameter hole 76 opposite to the connecting device 68 and a narrow diameter hole 78 adjacent to the connecting device 68. The channel 80 of the connecting device is in the connecting part 70 and has the same the diameter, like the hole 78 with a narrow diameter, is coaxial with it.

A similar seat frame connecting device, i.e. a second seat frame connecting device is mounted on the rear pillar of the first sidewall 8. In addition, similar first and second seat frame connecting devices are mounted on the second sidewall 10. In the mounted state, the seat frame connecting devices of the two sidewalls 8, 10 will be facing each other .

Fig.8 depicts the back 12 in more detail. The backrest 12 comprises an upper backrest 82 and a lower backrest 84 which are parallel to each other and which will be arranged substantially horizontally in the final soft sofa. The upper backrest plank 82 and the lower backrest plank 84 are connected to each other by a first vertical backrest plank 86 and a second vertical backrest plank 88, which are located at opposite ends of the upper and lower backrest planks 82, 84. Optionally, the backrest 12 may comprise one or more additional vertical back support strips 90 that connect the backrest strips 82 and 84.

Fig. 9a shows a first connecting device 92 of the sidewall of the back 12. A first connecting device 92 of the sidewall is fastened, for example, by welding, riveting or bolting, to the second vertical support bar 88 of the back of the back. The sidewall connecting device 92 has an upper end 94 that is adjacent to the upper backrest plate 82 and an opposite lower end 96. The connecting guide 98 extends from the upper end 94 to the lower end 96. The connecting guide 98 is wider at the upper end 94 than at the lower end end 96, and therefore the poet has the general shape of a wedge with its edge 100 located at a distance with respect to the upper plank 82 of the back. It should be understood that such a sidewall connection device is mounted on the first vertical backrest bracket 86. In the mounted state, the connecting devices of the sidewalls of the backrest 12 will be turned away by their face surfaces from each other.

Fig. 9b depicts a pin 102 of the first seat cage connector device 12. The pin 102 of the first seat cage connector device is attached to the lower side of the lower backrest plate 84 and extends downward, as shown in Fig. 9b, from this point.

Figure 10 depicts the first stage of installation of the frame for upholstered furniture for seating. At the first stage, the frame 6 of the seat is non-rigidly attached to the first sidewall 8. This can be done by one person, while such a person lifts one end 103 of the frame 6 of the seat with one hand and then uses the other hand to move the first sidewall 8 so that the front the strut 48 and the rear strut 50 of the first sidewall 8 were housed in the corresponding receiving hole 34 of the sidewall, shown best in FIG. 4a, of the seat frame 6. Owing to the respective seat frame connecting devices 68, described in detail with reference to FIGS. 7a-b, the first sidewall 8 can temporarily remain in this position, representing a self-contained intermediate state of the assembly, until the final connecting fixing rods having in this embodiment, the shape of the final connecting fixing bolts 104, as will be described in more detail:

11a depicts in more detail the temporary attachment of the seat frame 6 to the first sidewall 8. The front strut 48 of the first sidewall 8 is provided with a frame connecting device 68 and in the first step of moving the front strut 48 into the receiving hole 34 of the sidewall shown in figa, the input section, those. the support pin 72 will be inserted into the hollow interior 36 of the front plate 14 of the seat frame, and the front plate 14 of the seat frame will be mounted on the support pin 72. In this position, the hole 76 with a wide diameter, and the hole 78 with a narrow diameter, and the channel 74 of the front pillar and the connecting channel 80 of the connecting device 68 will become aligned in line with the threaded hole 46 of the side mounting plate 38. Thus, the support device in the form of a support pin 72 is configured to align and hold the first sidewall 8 attached to the seat frame 6 in a self-contained intermediate state of the assembly.

11b shows in more detail a fixed connection between the seat frame 6 and the first sidewall 8. The final connecting fixing bolt 104 is inserted into the channel of the front pillar 74. The head 106 of the bolt 104 has smaller external dimensions than the wide diameter hole 76, but larger external dimensions than the narrow diameter hole 78, and therefore, the head 106 interacts with the hole 78 by passing the hole 76 and supporting it in the front strut 48, on it the inner part adjacent to the hole 78. The threaded rod 108 of the final connecting fixing bolt 104 passes through the holes 78 and 80 and engages with the threaded hole 46, while the latter continues in parallel with the seat plane of the seat frame 6, plate 38. By tightening the front bolt 104 the strut 48 of the first sidewall 8 can be rigidly attached to the front plate 14 of the seat frame, since the torque will act along the longitudinal direction of the bolt 104 and will press the first sidewall 8 to the frame 6 of the seat. The longitudinal direction of the bolt 104 coincides, in this stand-alone ready-to-use condition, with the longitudinal direction of the front frame 14 of the seat frame, which is a hollow tube of the frame 6 of the seat, and the bolt 104 is connected to the frame 14 of the frame by means of a mounting plate 38 placed therein. The advantage is that a very strong attachment of the seat frame 6 to the first sidewall 8 is achieved, since the tightening force applied to the bolt 104 will be transmitted along the longitudinal direction of the shaft 104 to the seat frame 6 and the first sidewall 8, and also along the longitudinal direction of the bar 14 frame. Similarly, another bolt 104 can be used to rigidly attach the rear strut 50 of the first sidewall 8 to the rear strip 16 of the seat frame shown in FIG. 3, seat frame 6. Thus, the openings 76, 78, 80, the sidewall mounting plate 38 and the bolt 104 all form part of the final connecting device configured to finally attach the first sidewall 8 to the seat frame 6 to obtain a self-contained, ready-to-use connection state between the seat frame 6 and the first sidewall 8.

11c illustrates a slightly modified embodiment, which is seen in side view and top in section. In this embodiment, the frame connecting device 168 that is attached to the front strut 48 is provided with a support device having an insertion portion in the form of a support hook 172. The support hook 172 is configured to engage with the mating portion in the form of an opening 139 formed in the upper front web 141 straps 14 of the seat frame. With the embodiment of FIG. 11c, a self-contained intermediate state of the assembly can be achieved, which is more stable than that shown in FIG. 11a.

12 depicts a second stage of mounting a frame for upholstered furniture for seating. In this second step, the seat frame 6, being rigidly attached to the first sidewall 8, is non-rigidly attached to the second sidewall 10. This can be done by one person, while such a person lifts one end 105 of the seat frame 6 with one hand and then uses the other a hand for moving the second sidewall 10 for temporary connection with the seat frame 6 in accordance with the same principles as shown above with reference to FIG. 11 a for the first sidewall 8, thereby achieving a self-contained intermediate state of the assembly. Then, final connecting fastening rods are installed in the form of final connecting fastening bolts 104, in accordance with principles similar to those described with reference to FIG. sidewall 10 and frame 6 of the seat.

Fig depicts the third stage of installation of the frame for upholstered furniture for seating. At this stage, the person installing the frame for upholstered furniture for seating moves the backrest 12 vertically downward in the direction of the arrow BR to the space between the first and second sidewalls 8, 10. Thus, as will be shown in more detail later in this document with reference to Fig. 14, the connecting guides 98 of the respective side panel connecting devices 92 located on the first vertical back support plate 86 and the second vertical back support plate 88, as shown above with reference to Fig. 9a, are moved to the corresponding connecting guide 64 of the corresponding connecting back devices 58 located on the first and second side walls 8, 10, respectively, as shown in FIGS. 6a and 6b.

In addition, as shown with a slight increase in FIG. 13, pins 102 of the seat frame connecting device attached to the lower side of the lower backrest plate 84 are inserted into the corresponding hole 110 in the rear frame 16 of the seat frame. Thereby, the lower plank 84 of the back is prevented from bending when a person sitting on a soft seat of the furniture leans against the back 12.

Fig. 14 shows how, after the third step shown in Fig. 13, the connecting guide 98 of the side panel connecting device 92, attached to the first vertical back support plate 86, moves to the connecting guide 64 of the back connecting device 58 mounted on the rear strut 50. As a result, the backrest connecting device 58 covers the sidewall connecting device 92 in a wedge connection, and the backrest 12, as shown in FIG. 13, is rigidly attached to the first and second sidewalls 8, 10.

Fig depicts another stage of installation of the soft part of the furniture for seating, containing the frame 4 for upholstered furniture for sitting. At this stage, the soft sections are attached to the frame 4 for upholstered furniture for seating. Optionally, the first and second side trim sheets 112, 114 are first attached to the first and second sidewalls 8, 10 to cover the corresponding “window” that is formed between the front strut 48, the rear strut 50, the upper armrest plate 52 and the central support bar 54 sidewalls. The upholstery backing sheets 112, 114 of the sidewalls may, for example, be made from a sheet of woven or non-woven textile material, a metal mesh, a plastic sheet or another type of sheet. Upholstery support sheets 112, 114 of the sidewalls may already be superimposed in the factory, for example, by gluing, hot melting, stapling, welding, riveting or sewing the sheet 112, 114 to the corresponding sidewall 8, 10, or may be applied to the corresponding sidewall 8 , 10 by the end customer using, for example, Velcro pads. Similarly, the backrest 12 may be provided with an upholstered backrest backing sheet 116 covering a “window” formed by an upper backrest 82, a lower backrest 84, a first vertical backrest support 86 and a second vertical backrest support 88. Upholstery back support sheets 116 can be of a similar type and have a fixing structure, like sheets 112, 114.

FIG. 15 also illustrates how the soft back member 118 moves down over the back 12. The soft back member 118 includes a recess 120 extending along the length of the soft member 118. The soft piece 118 can be moved down to the back 12 so that the back 12 was housed in a recess 120 of the soft part 118, and the soft part 118 sits astride the back 12. The soft part 118 may, for example, be made of a polyurethane (PU) foam block. You can also make a soft element from other materials such as non-woven fibers, staple fibers, etc. If desired, the soft member 118 may be enclosed in a sheath of upholstery 122. The soft member 118 may, for example, be attached to the back 12 via velcro pads, buttons, or other suitable devices. Similarly, the first and second soft sidewall members 124, 126 are adapted to move downward and fit the first and second sidewalls 8, 10. These soft members 124, 126 may be mounted on the inside of the respective sidewalls 8, 10, or may be provided with a recess , like the soft back element 118. In addition, the soft elements 124, 126 can be made of similar materials, and can be installed in accordance with similar principles, as the soft element 118.

Optionally, the cover of the seat frame, for example, the edge 128 of the seat frame is attached to the frame 6 of the seat to cover it. The edge 128 of the seat frame is usually made of woven textile material that can be attached to the frame of the seat frame 6 using buttons, Velcro pads or the like.

Fig.16 depicts the final stage of installation of the upholstered element of furniture for sitting, in this case, upholstered sofa, and illustrates the final upholstered sofa 130. At this stage, the tailor, who made textile cover 132 for the sofa, imposes over the entire surface of the soft elements 118, 124, 126 for they are tight and to form an outer cover that has a nice visual appearance, it can, for example, have a pattern 134, and is nice to sit on it. In addition, soft seating elements in the form of three removable seat cushions 136 are placed on the upper part of the seat frame 6 of the seat frame 4 for upholstered furniture for seating, thereby forming a comfortable seating area on the soft sofa 130.

FIGS. 17a and 17b show the connection between the front strut 248 and the front frame 214 of a seat frame shown in a self-contained intermediate state of the assembly corresponding to the state shown in FIG. 11a, but in an alternative embodiment. In this alternative embodiment, the first seat frame connecting device 268 is attached to the front strut 248 and includes a connecting device part 270 that is attached and parallel to the front strut 248 and a support device having an insertion portion in the form of a support hook 272, which in this embodiment permanently fixed to the connecting device 268 and which extends outward from the part 270 and from the front strut 248. The support hook 272 is configured to extend into the hollow front bar 214 of the seat frame, as will be described later in this document. The front strut channel 274 extends through the front strut 248. The channel 274 has a wide diameter hole 276 opposite the connecting device 268 and a narrow diameter hole 278 adjacent to the connecting device 268. The channel 280 of the connecting device is located in the connecting part 270 and has the same the diameter, like the hole 278 with a narrow diameter, is coaxial with it.

The front frame 214 of the seat frame is provided with a mounting plate 238 of the sidewall. The sidewall mounting plate 238 is provided with fixing flanges 242 for fixing, for example, by welding, the plate 238 to the inside 236 of the bar 214. The plate 238 is provided with a threaded hole 246 that is parallel to the plane for sitting on the seat frame, which contains the frame 214 of the frame, and also parallel to the longitudinal direction of the very front frame 214 of the seat frame, for the final attachment of the front strut 248 by means of a bolt in accordance with principles similar to those described with respect to fig.11b. At its lower end, the mounting plate 238 is provided with an inclined portion 239, which is adapted to fit in the support hook 272 of the connecting device 268 in a wedge structure. Compared to the embodiment shown in FIGS. 4b, 7b and 11a, the support hook 272 of the connector 268 mates with the inclined portion 239 of the mounting plate 238 provides increased stability of the connection between the seat frame and the sidewall in a self-contained intermediate state of assembly. In addition, a higher strength can also be achieved, compared with the embodiment shown in FIG. 11b, of the connection between the seat frame and the sidewall in a self-contained ready-to-use condition.

It should be understood that, within the scope of the appended claims, numerous modifications of the above described embodiments are possible.

It was described earlier in this document that a soft sofa is a soft element of furniture for a seat. It should be understood that the soft element of furniture for seating can also be a soft chair, a couch with soft upholstery or another type of soft element of furniture for sitting.

Above in this document, it was described that each of the sidewalls 8, 10 is made with the possibility of a soft sofa using two armrests. It should be understood that a soft furniture element can also be equipped with only one armrest, or be completely without an armrest. In this case, the corresponding upper armrest bar 52 and the upper portion of the corresponding front pillar 48 can simply be lowered from the corresponding sidewall.

Above in this document, it has been described that the front and rear legs 48, 50, which form the corresponding leg parts, are connected to each other by the upper arm 52 of the armrest and the central support bar 54. It should be understood that the front and rear legs 48, 50 can also be attached to each other in a different way, for example, they can be attached using only the central support strip 54 or only using the upper bracket 52 of the armrest. In addition, the front and rear struts 48, 50 may also be independent of each other, in which case they may not be attached to each other at all.

Above in this document, it was described that the straps 14, 16 of the seat frame and the first and second side straps 18, 20 of the seat frame are made of hollow tubes of rectangular cross section. According to alternative embodiments, these tubes may have other sections, including, for example, square and round sections.

It was described above that the final connecting fixing rods are in the form of final connecting fixing bolts 104. It should be understood that the final connecting fixing rods may have other shapes that are also suitable for attaching the seat frame 6 to the first and second leg parts 8, 10 For example, the final connecting fixing rod may have threads at both ends and cooperate with the nut to tighten the rod with respect to the hole 78 of the first leg portion 8. According to another alternative embodiment, the final connecting fixing rod may be pre-attached to the fixing plate 38.

As a result, the frame for upholstered furniture (4) for seating comprises a frame part (6) of the seat and at least a first foot part (8) attached to the frame part (6) of the seat. The frame part (6) of the seat comprises a frame structure (14, 16, 18, 20) of the seat, which is at least partially made of hollow tubes. At least one of the frame part (6) of the seat and the first foot part (8) comprises a support device (72). The support device (72) is arranged to align and hold the first foot part (8) attached to the frame part (6) of the seat in a self-contained intermediate assembled state. At least one of the frame part (6) of the seat and the first foot part (8) contains at least portions of the final connecting device (76, 78, 80, 38, 104) configured to final attach the first foot part (8) to the frame part (6) of the seat to transform the self-contained intermediate state of the assembly into a self-contained ready-to-use state.

Claims (21)

1. Frame for upholstered furniture for seating, comprising a frame part (6) of the seat and at least a first foot part (8) attached to the frame part (6) of the seat, characterized in that the frame part (6) of the seat comprises a frame structure (14, 16, 18, 20) of the seat, which is at least partially made of hollow tubes, at least one of the frame part (6) of the seat and the first foot part (8) contains a support device (72; 172; 272) made with the possibility of alignment and temporary connection of at least one of the frame part (6) of the seat and the first foot part (8) to another of the frame part (6) of the seat and the first foot part (8), and the supporting device (72; 172; 272) contains an input section (72; 172; 272) located on one of the frame part (6) of the seat and the first foot part (8) and made with the possibility of introduction to another of the frame part (6) of the seat and the first foot part (8) with the possibility of aligning and holding the first foot part (8) attached to the frame part (6) of the seat in a self-contained intermediate state of the assembly, in which at least one of the frame parts (6) of the seat and the first leg part (8) contains at least portions of the final connecting device (76, 78, 80, 38, 104; 238), comprising: i) a mounting plate (38) having a channel (46) that is parallel to the seat plane of the frame part (6) of the seat, and the mounting plate (38) is located in one of the frame part (6) of the seat and the first foot parts (8), ii) a hole (78) located in another of the frame part (6) of the seat and the first foot part (8), and iii) a final connecting fixing rod (104) configured to interact with the hole (78) and with a channel (46) located in the mounting plate (38), while the rod (104) is tightened to create a pulling force with respect to the frame part (6) of the seat and the first foot part (8) acting along the longitudinal direction of the rod (104) for finally attaching the first foot portion (8) to the frame part (6) of the seat and transforming the self-contained intermediate state of the assembly into a self-contained ready-to-use state. 2. The frame for upholstered furniture for seating according to claim 1, in which the supporting device (72; 172; 272) is at least partially separated from the final connecting device (76, 78, 80, 38, 104; 238). 3. The frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the supporting device (72; 172; 272) and the final connecting device (76, 78, 80, 38, 104; 238) interact in the final connection of the first leg part ( 8) and the frame (6) of the seat. 4. Frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the input section (72; 172; 272) is permanently fixed to one of the frame part (6) of the seat and the first foot part (8) on which the input section is located (72; 172; 272). 5. The frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the mounting plate (38) is located in the hollow inner part (36) of the hollow tube (14) of the frame part (6) of the seat, and in which the hole (78) is located on the first leg part (8), preferably, the longitudinal direction of the rod (104) coincides, in an independent ready-to-use state, with the longitudinal direction of the hollow tube (14) of the frame part (6) of the seat, with the rod (104) attached to the hollow tube (14) ) by means of the mounting plate (38). 6. Frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the channel (46) of the mounting plate (38) is a threaded hole (46) configured to interact with the threaded rod (108) of the rod (104), while preferably, the final connecting rod (104) is a bolt (104) in which the hole (78) is smaller than the head (106) of the bolt (104) and is configured to interact with the head (106) while tightening the bolt (104). 7. Frame for upholstered furniture for seating according to any one of the preceding paragraphs, comprising a second leg part (10), configured to attach to the frame part (6) of the seat at its opposite end (105), compared with the first leg part (8) wherein at least one of the frame part (6) of the seat and the second foot part (10) comprises a support device (72; 172; 272) configured to align and temporarily attach at least one of the frame part (6) of the seat and a second foot part (10) to another of the frame part (6) of the seat and the second foot part (10), and the supporting device (72; 172; 272) contains an input section (72; 172; 272) located on one of the frame part (6) of the seat and the second foot part (10) and made with the possibility of introducing into the other of the frame part (6) of the seat and the second foot part (10), with the possibility of aligning and holding the second foot part (10) attached to the frame part (6) self-contained seats the general intermediate state of the assembly, at least one of the frame part (6) of the seat and the second foot part (10) comprises a final connecting device (76, 78, 80, 38, 104; 238), comprising: i) a mounting plate (38) having a channel (46) that is parallel to the seat plane of the frame part (6) of the seat, and the mounting plate (38) is located in one of the frame part (6) of the seat and the second foot parts (10), ii) an opening (78) located in another of the frame part (6) of the seat and the second leg part (10), and iii) a final connecting fixing rod (104) configured to interact with the hole (78) and with a channel (46) located in the mounting plate (38), while the rod (104) is tightened to create a pulling force with respect to the frame part (6) of the seat and the second foot part (10) acting along the longitudinal direction of the rod (104) for the final attachment of the second leg part (10) to the frame part (6) of the seat and transforming the self-contained intermediate state of the assembly into a self-contained ready-to-use state. 8. Frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the frame structure (14, 16, 18, 20) of the seat is at least partially made of hollow tubes made of a material selected from the following: steel, aluminum, plastics and composites, such as fiber-reinforced polymers, for example, carbon and fiberglass reinforced plastics, preferably hollow tubes have a rectangular cross-section, more preferably a rectangular cross-section having its largest width in the vertical direction. 9. Frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the frame part (6) of the seat comprises a front strip (14) of the seat frame, a rear strip (16) of the seat frame, a first side strip (18) of the seat frame and the second side a strip (20) of the seat frame, which are all made of metal tubes, more preferably of steel tubes. 10. Frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the first and second sections (8, 10) of the side walls are made with the possibility of connection at opposite ends (103, 105) of the frame part (6) of the seat, in which the backrest (12 ) frame (4) for upholstered furniture for seating is made with the possibility of attaching to the first and second sections (8, 10) of the sidewalls. 11. The frame for upholstered furniture for seating according to claim 10, in which at least one, preferably both, of the first and second sections (8, 10) of the sidewalls is provided (s) with a corresponding backrest connecting device (58), and in which a corresponding (s) the end (s) of the backrest (12) is provided with (s) a connecting device (s) (92) for the sidewalls, each of the connecting device (trunk) (92) of the sidewalls being wedged to connect to the corresponding connecting device (58) of the backrest section (8, 10) of the sidewall, preferably the connecting device (VA) (92) of the sidewalls has a common wedge shape. 12. Frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the frame part (6) of the seat, the first and second leg parts (8, 10) and the back (12) of the frame (4) for upholstered furniture for seating packaging in a parallelepiped-shaped flat package (2), preferably a parallelepiped-shaped flat package (2) has a height (HT) that is less than 30% of the width (WT) of the parallelepiped-shaped flat package (2). 13. The frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the first leg portion (8) comprises a front and rear pillar (48, 50) made of metal tubes, more preferably of steel tubes. 14. Frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the supporting device comprises a support hook (172; 272), configured to interact with the mating section (139; 239) located on the other of the frame part (6) of the seat and the first foot part (8). 15. The frame for upholstered furniture for seating according to any one of the preceding paragraphs, in which the first foot part forms part of the first sidewall (8). 16. Upholstered element of furniture for seats, characterized in that the upholstered element of furniture (130) for seats contains a frame (4) for upholstered furniture for sitting according to any one of the preceding paragraphs. 17. The upholstered furniture element for seats according to claim 16, wherein the upholstered furniture element (130) for the seat further comprises at least one soft back element (118) supported by the backrest (12) of the upholstered furniture frame (4) for seats, and at least one soft element (136) for sitting at least partially covers the frame part (6) of the seat, and the cover (132) covers the soft element (118) of the back and is supported by the frame (4) for upholstered furniture for seats. 18. A method of mounting a frame for upholstered furniture for seating, comprising the steps of: providing a frame portion (6) of the seat, which comprises a frame structure (14, 16, 18, 20) of the seat, which is at least partially made of hollow tubes, provide at least the first foot part (8), enter the input section (71; 172; 272) of the support device (72; 172; 272) located on one of the frame part (6) of the seat and the first foot part (8) in the other of the frame part (6) of the seat and the first foot part (8) with the possibility of aligning and holding the first foot part (8) attached to the frame part (6) of the seat in a self-contained intermediate state of the assembly, and the final connecting device (76, 78, 80, 38, 104; 238) by tightening the final connecting rod (104) interacting with the channel (46) located in the mounting plate (38) located on one of the frame part (6) of the seat and the first foot part (8) , while the channel ( 46) is parallel with the seat plane of the frame part (6) of the seat, and with an opening (78) located in the other of the frame part (6) of the seat and the first foot part (8), for transforming the self-contained intermediate state of the assembly into a self-contained ready to use state. 19. The method according to p. 18, further comprising, after the stage of installation of the final connecting device (76, 78, 80, 38, 104; 238) for transforming the self-contained intermediate state of the assembly into a self-contained ready-to-use state, the stages in which the second the foot part (10) at the opposite end (105) of the frame part (6) of the seat by introducing the input portion (72; 172; 272) of the support device (72; 172; 272) located on one of the frame part (6) of the seat and the second foot part (10), into another from the frame part (6) of the seat and the second foot part (10) with the possibility of aligning and holding the second foot part (10) attached to the frame (6) of the seat in a self-contained intermediate state of the assembly, and establish the final connecting device (76, 78, 80, 38, 104; 238) by tightening the final fixing rod (104) interacting with the channel (46) located in the mounting plate (38) located on one of the frame part (6) the seat and the second leg part (10), wherein the hole (46) is parallel to the seat plane of the frame part (6) of the seat, and with the hole (78) located in another of the frame part (6) of the seat and the second leg part (10) ), to transform the self-contained intermediate state of the assembly into a self-contained ready-to-use state. 20. The method according to any one of paragraphs. 18, 19, further comprising the steps in which the first and second sections (8, 10) of the sidewalls are mounted to the frame part (6) of the seat, with each section (8, 10) of the sidewall provided with a back connection device (58), provide a backrest (12) having sidewall connecting devices (92) located at opposite ends of the backrest (12), each sidewall connecting device (92) being wedged to be connected to the back connecting devices (58), and the backrest (12) is moved to a direction substantially perpendicular to the plane of the carcass portion (6) of the seat to allow the connection of the connecting devices (92) of the sidewalls of the back (12) to the connecting devices (58) of the back of the corresponding sections (8, 10) of the sidewalls.

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